JPH1024558A - Printing press - Google Patents

Printing press

Info

Publication number
JPH1024558A
JPH1024558A JP9064419A JP6441997A JPH1024558A JP H1024558 A JPH1024558 A JP H1024558A JP 9064419 A JP9064419 A JP 9064419A JP 6441997 A JP6441997 A JP 6441997A JP H1024558 A JPH1024558 A JP H1024558A
Authority
JP
Japan
Prior art keywords
anilox roller
printing
gear
cylinder
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9064419A
Other languages
Japanese (ja)
Inventor
Fritz Achelpohl
Guenter Rogge
ロッゲ ギュンター
アッヘルポール フリッツ
Original Assignee
Windmoeller & Hoelscher
ウィンドメーレル ウント ヘルシェル
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE19611048:3 priority Critical
Priority to DE1996111048 priority patent/DE19611048A1/en
Application filed by Windmoeller & Hoelscher, ウィンドメーレル ウント ヘルシェル filed Critical Windmoeller & Hoelscher
Publication of JPH1024558A publication Critical patent/JPH1024558A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/0008Driving devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F5/00Rotary letterpress machines
    • B41F5/24Rotary letterpress machines for flexographic printing

Abstract

PROBLEM TO BE SOLVED: To perform continuous operation at a low rotational speed and to perform cleaning at a high rotational speed by connecting an anilox roller to the gear of the anilox roller through a shiftable clutch and connecting the same to the drive device of a speed changeable and reversibly rotatable anilox roller through a second shiftable clutch. SOLUTION: The gear 15 of an anilox roller can be connected to the right- hand shaft journal of the anilox roller 13 through a shiftable clutch 30 and a motor 31 can be connected to the pinion gear 18 of gear stages 18, 19 through a second shiftable clutch 32. Since the anilox roller 13 is cut off from the gear 15 of the anilox roller by the first shiftable clutch 30, the anilox roller 13 is driven at a low continuous operation rotational speed during the stop period of a main drive device. At a time of cleaning work, the anilox roller is driven in a reverse direction at a rotational speed higher than that at a time of printing work through the motor 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a central impression cylinder supported by bearings of a frame of a printing press and provided with a driving device, and at least one printing unit, wherein the printing unit is a central impression cylinder. A driven printing cylinder pressed against the printing cylinder, and an inking roller or anilox roller pressed against the printing cylinder and operating in combination with the cleaning inking device, each of the central impression cylinder, the printing roller and the anilox roller being the same. The gears that drive them in the axial direction are provided, and the anilox roller is provided with a special continuous operation driving device.By displacing the printing cylinder and the anilox roller in parallel, the gears of the printing cylinder are respectively driven by the central impression cylinder. Gears of the anilox roller and the gears of the printing cylinder Connected the printer, preferably it relates to a flexographic printing machine.

[0002]

2. Description of the Related Art A flexographic printing press of this type is, for example,
It is known from the German patent (DE-PS 34 37 216). With reference to FIG. 7 of the drawings, the drive of the central impression cylinder of the known printing press, the drive of the printing cylinder and the anilox roller of the only printing unit are briefly described below. The axial journal of the central impression cylinder 3 (shown only by the dashed center line) is supported by bearings on the side parts 1, 2 of the printing press frame. Bull gear
4 is keyed to a shaft journal on the right side of the central impression cylinder 3. The bull gear 4 is driven by a drive pinion 6 and intermediate gears 7 to 10 by a main drive motor 5 which is an electric motor.
(These form the corresponding gears). The gears 8, 9 are keyed to a shaft 11, indicated by dashed lines, which is also supported by the bearings of the printing press frame.

The printing cylinder 12 and the anilox roller 13 are, as disclosed in the above-mentioned German patent,
It is supported by bearings in a bearing block of a slide carriage movably guided on a bracket of the printing press frame. The gear 14 of the printing cylinder and the gear 15 of the anilox roller are fixed to the right shaft journal (the shaft journal is also indicated only by broken lines) passed through the bearing blocks of the printing cylinder 12 and the anilox roller 13, The gear 15 of the anilox roller is supported by a bearing of a shaft journal of the anilox roller via a clutch 16. By moving the slide carriage of the printing cylinder and the slide carriage of the anilox roller,
Engagement and disengagement of the gear teeth of the bull gear 4 with the gear teeth of the print cylinder gear 14, and the print cylinder gear 1
4 and the gear teeth of the anilox roller gear 15 can be engaged and disengaged. In this way, the slide carriage of the printing cylinder and the slide carriage of the anilox roller can be used for the large movement for the exchange of the printing cylinder and the "non-printing position" (in which the cylinder and the cylinder are safely separated, These gear teeth are still engaged with each other) to make small movements.

[0004] Normally, the anilox roller 13 continues to operate at a lower rotation speed in the non-printing position than during the printing operation to prevent the ink from drying out during a relatively short printing interruption. This continuous operation drive has a servomotor 17 which drives the left journal of the anilox roller 13 via a gear stage consisting of gears 18, 19 and a clutch 20. The reason why the continuous driving can be performed is that the anilox roller 13 is rotated in one direction by the right clutch 16 even when the gear 15 of the anilox roller is stopped. During a normal printing operation, the continuous drive drives the anilox roller 1 via the bull gear 4 and the gear 14 of the printing cylinder.
3 does not hinder the drive. Because drive gear 1
9 is also supported by the bearing via the clutch 20 of the left shaft journal of the anilox roller 13.

[0005] In the printing press of the present invention, a cleaning inking device (the device is
German Patent Application No. 195 48 5 filed on December 22, 1995
(Explained in detail in 35.1). As briefly described with reference to FIG. 8, the cleaning inking apparatus has a doctor blade bracket 21 having a profile shaping rail that can be adjusted on the anilox roller 13. The rail of the doctor blade bracket 21 is provided with a groove that forms the internal space of the ink chamber. A bore 22 for supplying printing ink opens into this groove in the central area. In the lower end region of the groove, bore holes 23 and 24 for discharging the printing ink are arranged. The front side of the edge of the groove of the doctor blade bracket 21 is inclined in the opposite direction in the roof-like portion. The doctor blades are mounted on these front sides so that they can make trimming and / or rubbing contact with the anilox roller 13. Doctor blade assemblies of this kind are known, for example, from German patent applications 195 16 223.3 and 195 16 224.2, and for a more precise description of doctor blade assemblies, reference is made to these German patent applications. Please refer to.

In a doctor blade assembly known from German Patent Application No. 195 48 535.1, the anilox roller is rotated at a high rotational speed (ie, during a printing operation) immediately after the doctor blade assembly is cleaned. (A rotation speed higher than the speed), and is driven at least once in the reverse direction.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to continuously operate at a continuous operation rotational speed lower than an operation rotational speed, and to clean a doctor blade assembly in a reverse rotational direction at a rotational speed higher than the operation rotational speed. It is an object of the present invention to create a printing press of the type mentioned at the outset, in which the anilox rollers can be driven for the purpose.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a printing press of the type mentioned above, in which the anilox roller is connected to the gear of the anilox roller via a first shiftable clutch, and This problem is solved by being configured to be connected via a second shiftable clutch to a drive device for an anilox roller capable of speed change and reverse rotation. In the printing press of the present invention, since the anilox roller is connected to the shaft journal of the anilox roller not through the freewheel but through the shiftable clutch, the anilox roller is independent of the driving device of the printing press. And at any particular rotational speed (and thus at a low continuous operating rotational speed, but also at a high rotational speed for cleaning) via the anilox roller drive while the printing press is stopped. ) Drive in both rotational directions.

The German patent (DE-PS 34 37 216) states that a special problem for printing presses, in particular for flexographic printing presses, is to properly align the printing cylinders with each other after the printing cylinders have been replaced. ing. Accordingly, another object of the invention is a printing press, preferably a flexographic printing press, according to the preamble of claim 2, in which, after replacement of the printing cylinders, these printing cylinders are simple and suitable. It is an object of the present invention to create a printing machine capable of performing a precise alignment. According to the present invention, the problem is that only the gears of the printing cylinder are connected to the central impression cylinder by parallel displacement, the anilox roller is provided with another drive device capable of control, shifting and reverse rotation, the anilox roller Is achieved by a printing press configured to be connected to a gear of a printing cylinder via a gear.

In this embodiment of the printing press of the present invention, during a printing operation, the printing cylinder is driven only by the bull gear with which the printing cylinder engages. During the printing operation, the anilox roller is also driven via the gear of the roller, and the rotation speed of the anilox roller can be controlled by a computer. In order to enable simple and accurate control of the rotation speed,
The drive motor of the anilox roller is functionally constituted by a stepper motor. Thus, during the printing operation, the anilox roller is driven at the same peripheral speed as the printing cylinder.
Also, during the printing operation, the anilox roller can be driven at a higher (or lower) peripheral speed than the print cylinder to control the inking of the print cylinder in this way. During non-printing operations where the anilox roller does not contact the print cylinder, the anilox roller can be driven at the desired low continuous operating rotational speed.

[0011] During the cleaning operation, the anilox roller can be driven at a high rotation speed (for example, a rotation speed higher than the rotation speed during the printing operation). A particular advantage of this embodiment of the invention is that after the printing cylinder has been replaced, the printing cylinders of some printing units can be properly aligned using the drive of the anilox roller. For this purpose, the gear of the printing cylinder is provided with a mark (for example an identification hole), by means of which the printing cylinder is rotated to an initial position opposite the frame of the printing press. Starting from this initial position, the drive of the anilox roller rotates the individual printing cylinders to a position where they are properly aligned. In this process, the control of the individual stepper motors of the drive of the anilox roller is performed by a computer in which the initial position and the individual rotation angles for aligning the printing cylinder with their proper alignment are stored.

High performance computers also allow the necessary adjustments to be made while the printing press is running, and after properly aligning the individual print cylinder gears, the gears are adjusted to the correct angle. It can be arranged and precisely engaged with the gear teeth of the bull gear. The gears of the printing cylinders are engaged with the gears of the anilox rollers for the purpose of properly adjusting the individual printing cylinders and / or the gears of the printing cylinder. The coupling and uncoupling of the gears of the anilox roller and the gears of the printing cylinder is effected functionally by the axial displacement of one of these gears. The computer also ensures that the proper angular engagement of the gears occurs without the teeth knocking together. According to a third embodiment of the present invention, there is provided a printing press according to the preamble of claim 2, in which an anilox roller is provided with control, shifting and reverse rotation. Another driving device is provided,
The gear of the printing cylinder is connected only to the gear of the anilox roller, and the gear of the anilox roller is detached from the anilox roller via the shiftable clutch.

In this novel development of the printing unit according to the invention, the printing cylinder is driven by a drive of an anilox roller during the printing operation, rather than by a bull gear driving a central impression cylinder. With this design, all the advantages of the printing press are obtained by the second embodiment of the present invention. During the printing operation of the printing cylinder, a speed different from the peripheral speed of the central impression cylinder is transmitted by the driving device of the anilox roller. This offsets the unwinding error of the web to be printed, based on the relative speed obtained in this process. By rotating the printing cylinder slowly, the printed image can be enlarged in the circumferential direction, and conversely, by rotating it rapidly, the printed image can be flattened.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drive according to a first embodiment of the invention for the central impression cylinder and the printing cylinder and the anilox roller of one of the printing units of a flexographic printing press will be described with reference to FIGS. 1 and 2. I do. Where the reference numbers in FIGS. 1 to 6 indicate the same parts of the known flexographic printing press of FIG. 7, these same reference numbers are used. 1 and 2, the gear 15 of the anilox roller can be connected to the right journal of the anilox roller 13 via a shiftable clutch 30 and the motor 31 can be connected via a second shiftable clutch 32. 7 in that the gear stages 18 and 19 can be connected to the pinion gear 18.
Is different from the driving device described in the above. As described in connection with FIG. 8, the anilox roller 13 includes:
A cleaning inking device 34 can be attached.

FIG. 1 shows that the slide carriage holding the printing cylinder 12 and the anilox roller 13 is separated from the central impression cylinder 3 by a sufficiently large distance so that the gear 14 of the printing cylinder 12 no longer engages the bull gear 4. Since the gear 15 of the anilox roller 13 is no longer engaged with the gear 14 of the printing cylinder 12, the drive is shown in a position where the printing cylinder 12 can be lifted and replaced. In the illustrated position, the anilox roller 13 is driven in the reverse direction at a higher rotation speed than the rotation speed during the printing operation via the motor 31 during the cleaning operation, that is, during the cleaning operation, while the main driving device is stopped. You. For this purpose, the shiftable clutch 3
2 and the central press control are engaged, whereby
A motor 31 (which rotates in both directions) drives the anilox roller 13 via gear stages 18 and 19 in a desired rotational direction and at a desired rotational speed.

In the non-printing position, the gears 4, 14 and 15 should be loosely engaged. However, since the anilox roller 13 is separated from the gear 15 of the anilox roller by the first shiftable clutch 30, the anilox roller 13 is When the main drive unit is stopped, it is driven at a low continuous operation rotational speed, and is driven at a high rotational speed during a cleaning operation. During the printing operation, the gear 15 of the anilox roller is connected to the anilox roller 13 by the engagement of the clutch 30, and the connection to the motor 31 is released by the release of the clutch 32. This state can be located at other positions. The state of the drive during the printing operation can be understood from FIG. The motor 31 can be controlled by a central machine controller (eg a computer) and can be designed more powerfully according to the higher requirements imposed on the motor.

A second embodiment of the present invention will be described with reference to FIGS. In this embodiment, only the gear 14 of the printing cylinder 12 can be engaged with the teeth of the bull gear 4 by displacing the slide carriage holding the printing cylinder 12 in parallel. During the printing operation and the continuous operation / cleaning operation, only the anilox roller 13 is driven by the servomotor 40 to shift the gears 18 and
19 is driven. A gear 14 is provided on the right journal of the anilox roller 13. The gear 14 disengages the two gears 4, 14 and moves them together and / or aligns the printing cylinder 12 with the anilox roller 13, and then engages with the teeth of the gear 41 only by axial displacement. This allows the printing cylinder 12 to be aligned with the printing cylinder of another printing unit via the drive of the anilox roller 13,
Realignment after replacement can be preset.

Prior to starting the printing operation, the gear 14 of the printing cylinder 12 is disengaged in the axial direction to re-engage with the gear 41 of the anilox roller 13 and the printing cylinder 12 is printed on the central impression cylinder 3. Into position and the gears 4, 14 are engaged in a manner appropriate for the bearing. 5 and 6 show a third embodiment of the driving device according to the present invention. This embodiment differs from the embodiments shown in FIGS. 3 and 4 only in that the printing cylinder 12 can be driven even during printing operation by the servo motor 50 that drives the anilox roller 13. Accordingly, the bull gear 51 is designed with a correspondingly small diameter so that it does not engage with the gear 14 of the printing cylinder 12 during the printing operation.

During the continuous operation and during the cleaning operation, the anilox roller 1 is independent of the printing cylinder 12.
3 so that the anilox roller 1 can be driven.
The third gear 15 can be disengaged by the shiftable clutch 52. 6, the gear 14 of the printing cylinder 12 can be engaged and disengaged from the gear 15 of the anilox roller 13 by causing a corresponding axial displacement on the spline shaft journal. is there. This is required during presetting to move all print cylinders to their initial position (where the rotation angles of all print cylinders are aligned with the machine frame on which the identification mark is based). The servo motors 50 of the anilox rollers 13 are selected so that the power suitable for the commands given to them is obtained, and that these motors are controlled according to the angle by a machine control that adjusts the printing cylinder 12. You.

The invention has been described with reference to only one printing unit of a flexographic printing press. However, the present invention is also applicable to an additional printing unit of a multi-color printing machine.

[Brief description of the drawings]

FIG. 1 shows several printing units of a flexographic printing press in a position in which a slide carriage holding a printing cylinder and an anilox roller is separated by a distance sufficient to lift the printing cylinder for replacement. FIG. 3 is a schematic view showing a drive device according to a first embodiment of the present invention for a central impression cylinder, a printing cylinder, and an anilox roller of one printing unit of FIG.

FIG. 2 is a schematic view similar to FIG. 1 showing a printing cylinder and an anilox roller arranged at a printing position.

FIG. 3 is a schematic diagram illustrating a modification of the drive device of FIGS. 1 and 2 according to a second embodiment of the present invention, showing a printing cylinder and an anilox roller in a non-printing position.

FIG. 4 is similar to FIG. 3 showing the printing cylinder gears disengaged from the bull gears due to the parallel displacement of the printing cylinders and engaged with the anilox roller gears due to axial displacement. FIG.

FIG. 5 is a schematic view similar to FIG. 1 according to a third embodiment of the present invention, showing a printing cylinder and an anilox roller in a printing position.

FIG. 6 is a schematic view of the drive of FIG. 5 showing the printing cylinder and the anilox roller being separated from the central impression cylinder by longitudinal movement.

FIG. 7 is a schematic diagram showing a known driving device corresponding to FIG. 1;

FIG. 8 is a schematic perspective view showing a central impression cylinder provided with a cleaning inking device, a printing cylinder, and an anilox roller.

[Explanation of symbols]

 Reference Signs List 3 Central impression cylinder 4 Bull gear 5 Main drive motor 12 Printing cylinder 13 Anilox roller 17, 40, 50 Servo motor 20 Clutch 21 Doctor blade bracket 30, 32, 52 Shiftable clutch 34 Cleaning inking device

Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location B41F 35/04 B41F 31/14 C

Claims (4)

[Claims]
1. A central impression cylinder supported by bearings of a frame of a printing press and provided with a drive, at least one
A driven printing cylinder pressed against a central impression cylinder and an inking roller or anilox roller pressed against the printing cylinder and operating in combination with a cleaning inking device. The central impression cylinder, the printing roller and the anilox roller are each provided with gears for driving them on the same axial direction, the anilox roller is provided with a special continuous driving device, the printing cylinder and the anilox roller By parallel displacement, the printing cylinder gear is connected to the gear of the central impression cylinder and the gear of the anilox roller is connected to the gear of the printing cylinder. Anilox slot through one shiftable clutch Coupled La gear, and second
A printing press, which is connected to a drive device for an anilox roller capable of speed change and reverse rotation via a shiftable clutch.
2. A driven type which has a central impression cylinder supported by bearings of a frame of a printing press and provided with a driving device, and a number of printing units, each printing unit being pressed against the central impression cylinder. A print cylinder and an inking roller or anilox roller pressed against the print cylinder and operating in combination with the cleaning inking device, each of the central impression cylinder, the print roller and the anilox roller arranging them on the same axial direction. In a printing press, preferably a flexographic printing press, provided with a driving gear and a special continuous drive on the anilox roller, only the gear of the printing cylinder is connected to the central impression cylinder by parallel displacement, the anilox roller Is provided with another drive device that can control, shift and reverse rotation,
A printing press, wherein an anilox roller is connected to a gear of a printing cylinder via a gear.
3. The printing press according to claim 2, wherein connection and disconnection between the gear of the anilox roller and the gear of the printing cylinder are performed by axial displacement of these gears.
4. The anilox roller is provided with another drive device capable of control, speed change and reverse rotation, wherein the gear of the printing cylinder is connected only to the gear of the anilox roller, and the gear of the anilox roller is shifted. 3. The printing press according to claim 2, wherein the printing press can be detached from the anilox roller via a clutch.
JP9064419A 1996-03-20 1997-03-18 Printing press Pending JPH1024558A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19611048:3 1996-03-20
DE1996111048 DE19611048A1 (en) 1996-03-20 1996-03-20 Printing machine, preferably flexographic printing machine

Publications (1)

Publication Number Publication Date
JPH1024558A true JPH1024558A (en) 1998-01-27

Family

ID=7788909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9064419A Pending JPH1024558A (en) 1996-03-20 1997-03-18 Printing press

Country Status (10)

Country Link
US (1) US5787811A (en)
EP (1) EP0796733B1 (en)
JP (1) JPH1024558A (en)
KR (1) KR970064921A (en)
CN (1) CN1172728A (en)
BR (1) BR9701344A (en)
CZ (1) CZ51097A3 (en)
DE (1) DE19611048A1 (en)
ES (1) ES2140924T3 (en)
TW (1) TW368477B (en)

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JP2006521941A (en) * 2003-04-01 2006-09-28 トレス アンレーイ アクティーゼルスカブ Printing with flexographic ink and lacquer
JP2006306104A (en) * 2005-04-29 2006-11-09 Heidelberger Druckmas Ag Printer and its operation method
JP2007247898A (en) * 2006-03-15 2007-09-27 Zahnradfab Friedrichshafen Ag Clutch device for printing machine
JP2008094100A (en) * 2006-10-11 2008-04-24 Man Roland Druckmas Ag Method and driver for driving printer equipped with short inking arrangement in working machine
JP2008542078A (en) * 2005-06-01 2008-11-27 カーベーアー−ジオリ ソシエテ アノニム Letterpress printing machine
CN104985915A (en) * 2015-08-17 2015-10-21 福建省晋江市佶龙机械工业有限公司 Flexographic printing head of multifunctional wallpaper machine

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JP2006521941A (en) * 2003-04-01 2006-09-28 トレス アンレーイ アクティーゼルスカブ Printing with flexographic ink and lacquer
JP2006306104A (en) * 2005-04-29 2006-11-09 Heidelberger Druckmas Ag Printer and its operation method
JP2008542078A (en) * 2005-06-01 2008-11-27 カーベーアー−ジオリ ソシエテ アノニム Letterpress printing machine
JP2007247898A (en) * 2006-03-15 2007-09-27 Zahnradfab Friedrichshafen Ag Clutch device for printing machine
JP2008094100A (en) * 2006-10-11 2008-04-24 Man Roland Druckmas Ag Method and driver for driving printer equipped with short inking arrangement in working machine
CN104985915A (en) * 2015-08-17 2015-10-21 福建省晋江市佶龙机械工业有限公司 Flexographic printing head of multifunctional wallpaper machine

Also Published As

Publication number Publication date
EP0796733B1 (en) 1999-12-22
EP0796733A1 (en) 1997-09-24
KR970064921A (en) 1997-10-13
BR9701344A (en) 1998-11-10
US5787811A (en) 1998-08-04
CZ51097A3 (en) 1997-10-15
CN1172728A (en) 1998-02-11
DE19611048A1 (en) 1997-09-25
TW368477B (en) 1999-09-01
ES2140924T3 (en) 2000-03-01

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